Java Chat Application

Overview

This project is a real-time Java-based chat application built using Spring Boot and WebSocket technology. It provides a responsive graphical user interface (GUI) for seamless communication between users, featuring user management, message broadcasting, and active user tracking.

Features

• Real-time Messaging: Exchange messages instantly using WebSocket.
• User-Friendly GUI: Built using Swing for intuitive user interaction.
• Active User List: View all connected users in real time.
• Dynamic Message Layout: Automatically adjusts to the window size for better readability.
• User Connection Management: Connect, disconnect, and notify users dynamically.

Directory Structure

Dhruv0306-Java-Chat-App/
├── HELP.md
├── mvnw
├── mvnw.cmd
├── pom.xml
└── src/
    ├── main/
    │   ├── java/
    │   │   └── com/
    │   │       └── example/
    │   │           └── JavaChatApplication/
    │   │               ├── JavaChatApplication.java
    │   │               ├── Message.java
    │   │               ├── WebSocketController.java
    │   │               ├── WebSocketSessionManager.java
    │   │               ├── WebsocketConfig.java
    │   │               └── client/
    │   │                   ├── App.java
    │   │                   ├── ClientGUI.java
    │   │                   ├── MessageListener.java
    │   │                   ├── MyStompClient.java
    │   │                   ├── MyStompSessionHandler.java
    │   │                   └── Utilities.java
    │   └── resources/
    │       └── application.properties
    └── test/
        └── java/
            └── com/
                └── example/
                    └── JavaChatApplication/
                        └── JavaChatApplicationTests.java

Prerequisites

• Java Development Kit (JDK) 21 or later
• Maven 3.8+
• Spring Boot 3.4.0

Setup Instructions

1. Clone the repository:

   git clone https://github.com/Dhruv0306/JavaChatApp.git
   cd Dhruv0306-Java-Chat-App

2. Build the application using Maven:

   ./mvnw clean install

3. Run the Spring Boot server:

   ./mvnw spring-boot:run

4. Start the client application:

   java -jar target/JavaChatApplication-0.0.1-SNAPSHOT.jar

5. Enter a username when prompted to join the chat.

Key Components

Backend

1. WebSocketController: Handles WebSocket endpoints for messaging and user management.
2. WebSocketSessionManager: Manages active user sessions and broadcasts updates.
3. WebsocketConfig: Configures WebSocket endpoints and message brokers.

Frontend (Client GUI)

1. ClientGUI: Provides the main graphical interface for users.
2. MyStompClient: Manages WebSocket connections for the client.
3. Utilities: Helper functions for GUI styling and layout adjustments.

Configuration

Modify src/main/resources/application.properties to set application-specific properties. Default WebSocket endpoint is configured as:

spring.application.name=JavaChatApplication

Testing

Run unit tests using:

./mvnw test

Tests are located in src/test/java/com/example/JavaChatApplication/.

Contributing

Feel free to fork the repository and submit pull requests. Contributions are welcome to improve functionality, fix bugs, or enhance the user experience.

License

This project is licensed under the Apache 2.0 License. See the LICENSE file for details.

Author

Dhruv Patel

• GitHub: Dhruv0306

Enjoy chatting!